phpPgAdmin is a fully functional web-based administration utility for a PostgreSQL database server. It handles all the basic functionality as well as some advanced features such as triggers, views, and functions (stored procs)

Poweradmin is a web-based DNS administration tool for PowerDNS server. The interface has full support for most of the features of PowerDNS. It has full support for all zone types, for supermasters, full support for IPv6 and multi-language support.

jose is a graphical Chess tool.
You can store chess games in a database.
You can view and edit games (including variations and comments).
You can play against a plugged-in chess engine and use it for analysis.
Features 3D board view.

SIDU is a FREE database web GUI written in PHP. Handy and powerful for MySQL + PostgreSQL + SQLite + CUBRID. SIDU is simple and easy DB tool to use! SIDU has all features you need for database admin and web development. It's a great DB admin tool! No installation need. Best database front-end web based tools, cross platform looking no further

Middlegen is a free general-purpose database-driven code generation engine based on JDBC, Velocity, Ant and XDoclet. If you already have a database, you can use Middlegen to generate EJB (CMP 2.0), Hibernate, JDO and JSP/Struts source code.

Like Access, from basic features such as table management, form and report generator as well as charting and workflow features it can be dynamically modeled with one another to any product solution. Limbas is based on PHP.